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Can I use 80w90 instead of 75w90? #4562401
11/02/17 06:25 PM
11/02/17 06:25 PM
Joined: Jul 2017
Posts: 187
Venezuela, South America
Emanuel Offline OP
Emanuel  Offline OP
Joined: Jul 2017
Posts: 187
Venezuela, South America
I have a 01 Corolla with a 5 spd transmission and I would like to change the transmission oil, the owner´s manual calls for a 75w90 GL4 oil and I can only find a 80w90 GL4 and a 75w90 GL5, I have read that GL5 should not be used in transmissions that call for GL4 oil so my only option is 80w90.

Would it be safe to use this oil? The coldest ambient temp here is 68 °F BTW

Re: Can I use 80w90 instead of 75w90? [Re: Emanuel] #4562403
11/02/17 06:27 PM
11/02/17 06:27 PM
Joined: Oct 2009
Posts: 3,511
Wet side WA
JohnnyJohnson Online content
JohnnyJohnson  Online Content
Joined: Oct 2009
Posts: 3,511
Wet side WA
Emanuel you Toyota sure shouldn't be burning much of that 75w90 but cold starts may be for the birds.

Last edited by JohnnyJohnson; 11/02/17 06:27 PM.

2004 Corolla 126649
Out: VML 5w-30 TG4967 OCI 5007 Miles
In: EDGE EP 5W-30 Bosch 3311 122537 7-18-18
2006 Duramax 74478
Out: T6 5W-40 M1-303
In: T6 5W-40 XG9100 73705 4-22-18
Re: Can I use 80w90 instead of 75w90? [Re: JohnnyJohnson] #4562415
11/02/17 06:40 PM
11/02/17 06:40 PM
Joined: Jul 2017
Posts: 187
Venezuela, South America
Emanuel Offline OP
Emanuel  Offline OP
Joined: Jul 2017
Posts: 187
Venezuela, South America
Originally Posted By: JohnnyJohnson
Emanuel you Toyota sure shouldn't be burning much of that 75w90 but cold starts may be for the birds.
grin

Re: Can I use 80w90 instead of 75w90? [Re: Emanuel] #4562419
11/02/17 06:43 PM
11/02/17 06:43 PM
Joined: Oct 2004
Posts: 8,309
Cincinnati, OH, USA
bullwinkle Offline
bullwinkle  Offline
Joined: Oct 2004
Posts: 8,309
Cincinnati, OH, USA
Use the GL4-I made the mistake of putting GL5 75W90 in the xB in my sig, synchronizers wouldn't work correctly, causing bad shifting. Went back to GL4, problem disappeared.


06 Ram 3500 CTD 4X4(FG Venturi), 93 GMC C3500 6.2, 89 F-450 7.3, 98 XJ 4.0(XG8A), 05 xB(XG3600), 18 Transit 3.7, 03 Merc Grand Marquis 4.6 2V(XG2)
Re: Can I use 80w90 instead of 75w90? [Re: JohnnyJohnson] #4562447
11/02/17 07:12 PM
11/02/17 07:12 PM
Joined: Jul 2012
Posts: 397
Michigan
khittner Offline
khittner  Offline
Joined: Jul 2012
Posts: 397
Michigan
Originally Posted By: JohnnyJohnson
Emanuel you Toyota sure shouldn't be burning much of that 75w90 but cold starts may be for the birds.


From what I understand, gear oil and engine oil use different viscosity scales; an 80w gear oil is pretty close in thickness/pourability to a 30w engine oil. I wouldn't use gear oil in an engine, but its viscosity may not be a problem.

Re: Can I use 80w90 instead of 75w90? [Re: Emanuel] #4562459
11/02/17 07:30 PM
11/02/17 07:30 PM
Joined: Oct 2005
Posts: 7,094
Colorado
Kuato Offline
Kuato  Offline
Joined: Oct 2005
Posts: 7,094
Colorado
Yes; in your temperature that will be a good oil.


Thick vs Thin test: 15k / 43k miles complete
Re: Can I use 80w90 instead of 75w90? [Re: khittner] #4562461
11/02/17 07:30 PM
11/02/17 07:30 PM
Joined: Jul 2017
Posts: 187
Venezuela, South America
Emanuel Offline OP
Emanuel  Offline OP
Joined: Jul 2017
Posts: 187
Venezuela, South America
Originally Posted By: khittner
Originally Posted By: JohnnyJohnson
Emanuel you Toyota sure shouldn't be burning much of that 75w90 but cold starts may be for the birds.


From what I understand, gear oil and engine oil use different viscosity scales; an 80w gear oil is pretty close in thickness/pourability to a 30w engine oil. I wouldn't use gear oil in an engine, but its viscosity may not be a problem.
I think he was joking

Re: Can I use 80w90 instead of 75w90? [Re: Emanuel] #4562518
11/02/17 07:59 PM
11/02/17 07:59 PM
Joined: Jul 2007
Posts: 4,340
Midwest USA
LoneRanger Online content
LoneRanger  Online Content
Joined: Jul 2007
Posts: 4,340
Midwest USA
80W90 GL4 should perform properly in that application.



'09 Subaru Forester ...................(QS HM 5W30)
'16 Moto Guzzi Stelvio 1200 .....(ENI i-Ride PG 10W60)
Re: Can I use 80w90 instead of 75w90? [Re: Emanuel] #4562570
11/02/17 08:56 PM
11/02/17 08:56 PM
Joined: Sep 2002
Posts: 2,382
VA
Gebo Offline
Gebo  Offline
Joined: Sep 2002
Posts: 2,382
VA
Absolutely


'98 LEX LS400 280K
'00 LEX GS300 195K
'02 4Runner 225K
'05 Lex LS430 85K
'06 Toyota Highlander 145K
'09 Lex IS350 85K
'07 Lex GX470 60K
Amsoil in all engines, transmissions and differentials

Re: Can I use 80w90 instead of 75w90? [Re: Emanuel] #4562571
11/02/17 08:56 PM
11/02/17 08:56 PM
Joined: Jun 2013
Posts: 1,764
Virginia
mattwithcats Offline
mattwithcats  Offline
Joined: Jun 2013
Posts: 1,764
Virginia
Ravenol oil guide

http://www.ravenol.de/en/oil-guide.html

RAVENOL MTF-1 SAE 75W-85
: RAVENOL TGO SAE 75W-90
: RAVENOL VSG SAE 75W-90


2009 Smart Pure
Pennzoil Platinum Euro 0W-40, Purolator Synthetic PSL 14610, 45 mpg...
185/55R15 General HP tires, "H" speed rated, 44 psi (300 kpa)
Re: Can I use 80w90 instead of 75w90? [Re: Emanuel] #4562726
11/03/17 05:46 AM
11/03/17 05:46 AM
Joined: Sep 2015
Posts: 2,472
Malaysia
zeng Offline
zeng  Offline
Joined: Sep 2015
Posts: 2,472
Malaysia
Originally Posted By: Emanuel
I have a 01 Corolla with a 5 spd transmission and I would like to change the transmission oil, the owner´s manual calls for a 75w90 GL4 oil and I can only find a 80w90 GL4 and a 75w90 GL5, I have read that GL5 should not be used in transmissions that call for GL4 oil so my only option is 80w90.

Would it be safe to use this oil? The coldest ambient temp here is 68 °F BTW


'Strange' that your 01 Toyota doesn't recommend GL5.
A 2004 does.


Anyway, go ahead with 80W90 that provides thicker MOFT for stronger components protection.
Shiftability is an 'unpredictable' animal though, never mind it's GL4.


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